#!/usr/bin/env node

const stdin = process.stdin,
      stdout = process.stdout;

stdin.on('data',(data)=>{
  stdout.write(data.toString('utf-8').toUpperCase());

})

stdin.push('hello\n');
stdin.push('world');

for(let c='a'.charCodeAt(0);c<='z'.charCodeAt(0);c++){
  stdin.push(String.fromCharCode(c));
}

stdin.push(null);
stdin.pipe(stdout);
